Joanna grew up in New York City and is extremely sheltered, as evidenced by the fact that she has no idea how to do household chores or even make sandwiches, so it seems unlikely that she would have spent much time outdoors. However, she's instantly able to identify poison oak on the kids' faces, despite the fact that their own school principal had missed it earlier. See more
Tell me something about my life, Dean, something not horrible.
Well uh... yeah, there was that time you were working at Burger Boy, and this kid started choking on a French fry, and everybody in the place panicked, including me, except you, you knew exactly what to do. You ran over to the kid and you gave him that Heimlech, you know,
and puh! The kid puked up the fry and they named you Burger Boy employee of the month. They put your picture above the cash register and everything.